Quote:
Originally Posted by sean_persi
Hello,
Did you find out what was wrong with your vehicle? I have a 2011 328XI and recently cel light came up and my engine started to shake. Mine shows the same code " P054B - Coldstart Camshaft B position timing over-retarded". I changed my vanos solenoids and spark plugs but the cel is still on and engine still shaking. My car is out of warranty as well!
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your cam timing could be off, that's one guess